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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.4523 vino security update 2 December 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: vino Publisher: Debian Operating System: Debian GNU/Linux 8 Impact/Access: Access Privileged Data -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-15681 CVE-2018-7225 CVE-2014-6053 Reference: ESB-2019.4033 ESB-2018.0883 ESB-2014.2256 ESB-2014.1783 Original Bulletin: https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html - --------------------------BEGIN INCLUDED TEXT-------------------- Package : vino Version : 3.14.0-2+deb8u1 CVE ID : CVE-2014-6053 CVE-2018-7225 CVE-2019-15681 Debian Bug : 945784 Several vulnerabilities have been identified in the VNC code of vino, a desktop sharing utility for the GNOME desktop environment. The vulnerabilities referenced below are issues that have originally been reported against Debian source package libvncserver. The vino source package in Debian ships a custom-patched and stripped down variant of libvncserver, thus some of libvncserver's security fixes required porting over. CVE-2014-6053 The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer did not properly handle attempts to send a large amount of ClientCutText data, which allowed remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that was processed by using a single unchecked malloc. CVE-2018-7225 An issue was discovered in LibVNCServer. rfbProcessClientNormalMessage() in rfbserver.c did not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets. CVE-2019-15681 LibVNC contained a memory leak (CWE-655) in VNC server code, which allowed an attacker to read stack memory and could be abused for information disclosure. Combined with another vulnerability, it could be used to leak stack memory and bypass ASLR. This attack appeared to be exploitable via network connectivity. For Debian 8 "Jessie", these problems have been fixed in version 3.14.0-2+deb8u1. We recommend that you upgrade your vino packages. Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXeRn62aOgq3Tt24GAQiYuQ//RuNDgH6JvWkNlUdb0soIJ0gkOTd/GKiR 2BAaE5bPC8GJLsrsBS/m8TJh0T6K14l/rUCeTmunJ5AY0iiI6xZ/R5bjJ9pXpJ99 emIXdfxuX17ylNjwV4HDeZlbX5zAFJxFg2s9iXCc60LAS55h6wxNN9oyHfbtCRRX /0hpo2H7Dq8DUE7SHqO1+JhwEo0CuaYf0qdRWkIIk7KJkPe8UY463QoKjZy3nK+V eZ3qhYs4Cq/nxtlKmbv3wgn/vdwYtUFk2Ft3Z9ZbpWXqt6/NBSOzt3Iq21FQuG0R JiYAkrx7wf+3O3ooHrXz9MrYqRmkgK+cNUiLF80VGN2HttrVnWxbBWAkXYufEa9q /agPphrq+JP65ia4EOTnRmA3RFjzY1zUWfb9sjaGy5lTRXp9oHQXpy1ZrKTTjX33 1wUGublKMrMrUsmH+n9P/Fe8npmAdsN9k2tWnPs3nFOZmpVyV6bDUraTmVee4OPS 6tqe73oLi04lxz3hHityZpULnRosl+lS+tpOEdJI/jURc/NfonixfE330KxBkSiN b3oUpfTK245NNVIghN+w2sHndiS23GMiRktn6MOTT8lweMkfT5Ak8tyH5WBLc4Lr 3hya/T3BCo/GLeruNKIaDIy4Whwp4hLM+ScVXKCFS/BgoUbh1isQ9KJ5D70pfXdc bCrBL+xX0ow= =WhBz -----END PGP SIGNATURE-----